| | Breese, IL | Clinton, IL | United States |
| Population | 4,300 | 7,016 | 329,725,481 |
| Female Population | 51.3% | 50.7% | 50.5% |
| Male Population | 48.7% | 49.3% | 49.5% |
| Median Age | 39.7 | 38.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 4,450 | 7,409 | 309,327,143 |
| Population - 2000 | 4,048 | 7,485 | 285,036,114 |
| Population - 1990 | 3,567 | 7,437 | 251,960,433 |
| Pop. 2000 to Now | 12.1% | -10.1% | 15.6% |
| Pop. 1990 to Now | 27.2% | -9.5% | 30.8% |
| space4 | | | |
| Population Density | 1,611.1 | 1,964.2 | 93.4 |
| Land Area | 2.7 | 3.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Breese, IL | Clinton, IL | United States |
| Age 0 to 4 | 7.2% | 7.0% | 5.9% |
| Age 5 to 9 | 5.0% | 5.6% | 6.1% |
| Age 10 to 14 | 4.4% | 7.0% | 6.6% |
| Age 15 to 17 | 2.7% | 3.7% | 3.9% |
| Age 18 to 20 | 3.8% | 3.2% | 4.0% |
| Age 21 to 24 | 5.3% | 5.4% | 5.2% |
| Age 25 to 34 | 15.2% | 12.9% | 13.8% |
| Age 35 to 44 | 11.5% | 12.5% | 12.9% |
| Age 45 to 54 | 13.2% | 11.5% | 12.6% |
| Age 55 to 59 | 9.4% | 6.9% | 6.7% |
| Age 60 to 64 | 4.5% | 5.5% | 6.3% |
| Age 65 to 74 | 9.0% | 8.9% | 9.6% |
| Age 75 to 84 | 5.5% | 6.5% | 4.5% |
| Age 85 and over | 3.4% | 3.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Breese, IL | Clinton, IL | United States |
| White | 92.9% | 90.6% | 59.4% |
| Black | 0.1% | 2.3% | 12.2% |
| Asian | 1.2% | 0.1% | 5.6% |
| Native American | 0.0% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.9% | 0.8% | 3.2% |
| Hispanic | 4.0% | 6.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Breese, IL | Clinton, IL | United States |
| Married Population | 59.5% | 46.0% | 49.8% |
| Currently Married | 59.0% | 43.4% | 48.0% |
| Married but Separated | 0.6% | 2.6% | 1.8% |
| Single Population | 40.5% | 54.0% | 50.2% |
| Never Married | 22.7% | 32.7% | 33.8% |
| Divorced | 9.0% | 13.6% | 10.8% |
| Widowed | 8.8% | 7.8% | 5.6% |
| space5 | | | |
| Household Size | 2.29 | 2.19 | 2.60 |
| Households | 1,851 | 3,121 | 124,010,992 |
| Family Households | 1,171 | 1,697 | 80,755,759 |
| Married couple, w/children | 25.5% | 22.7% | 30.5% |
| Married couple, no children | 57.7% | 48.6% | 42.9% |
| Non Family Households | 680 | 1,424 | 43,255,233 |
| Single householder, w/children | 10.2% | 20.3% | 15.8% |
| Single householder, no children | 6.6% | 8.4% | 10.8% |